iFixit

Using the plastic opening tool, you will need to detach the black square component which is boxed in blue.

Pry camera unit attached to it off the motherboard.

Using the plastic opening tool, detach the green square components attaching the Audio Output device to the motherboard.

Now use the screwdriver to unscrew the 2 black screws holding the Audio Output device to the motherboard.

Now that you have unscrewed the 2 black screws, the silver plate holding the device to the motherboard should come right off.

Next, gently pull the Audio Output device off of the LCD touchscreen. It is secured by some weak adhesive and should come off easily.

You are now free to install a new Headphone Jack/Audio Output device.